Everyone has a calculator App, an App that is almost great. However, we wanted to make a calculator App that would stand out from the rest visually, as well as functionally. Killersoft brings you a calculator without ads that not only provides the ease of use a standard calculator does, but a visually pleasing experience as well as the ability to customize your background, with newly added features only for the paid app.

Enhancements:
- Universal Support! CoolCalc. runs on iPhone or iPad in their respective resolutions.
-Runs on devices 4.0 and above.
-System settings entry that allows you to:
- Customize button colors by numbers and/or operators.
- Turn sounds on/off.

CoolCalc Features:
- Visually aesthetic interface that's easy on the eyes.
- Includes default "Hawaiian Cliffs" background.
- Customize background with any existing photo (automatically fits to the vertical axis.)
- Standard calculator output, + Mini-Tape, + Tape, + Basic Conversions.
- Mini-Tape displays complete calculation at time of evaluation (ie. 2.25 + 3.252 = 5.502)
- Tape shows you your last few equations.
- Basic Conversions converts the following: Miles to Kilometers, Feet to Meters, Pounds to Kilograms, Fahrenheit to Celsius, and Liters to Ounces.
- CoolCalc will stop your input before entering too large numbers (16 digits) before giving erroneous output.
- Standard single operand features: +, -, *, /.
- Calculate percentages (ie 199.99 - 15 % will display: 199.99 - 29.998 = 169.992).
- Up to 16 digit numbers (including ".") with three decimal place support.
- Evaluates multiplication or division first in two operand simple expressions (ie. 2 + (5 * 2) = 12.
- Change operators during session (ie 2 +, -, * 2 = 4)
- Change numbers between negative and positive.
- Auto-evaluates when needed (ie 2 + 2 + evaluates, displays "4 +" and awaits input)
- Repeated = evaluates your last results with your last chosen operator.